Method of producing light-emitting device

Abstract

A method for producing a light-emitting device includes: bonding a plurality of light-emitting elements to a plate-shaped light transmission member all at once with the plurality of light-emitting elements being arranged in a two-dimensional array extending in a first direction and a second direction; capturing an image of the plurality of light-emitting elements bonded to the light transmission member, and forming an alignment mark on the light transmission member based on positions in the image of the plurality of light-emitting elements; and after the forming of the alignment mark, forming a contact member in contact with a corresponding one of the plurality of light-emitting elements with the contact member being positioned with respect to the plurality of light-emitting elements by using the alignment mark.

What is claimed is: 
     
       1. A method for producing a light-emitting device, comprising:
 bonding a plurality of light-emitting elements to a plate-shaped light transmission member all at once with the plurality of light-emitting elements being arranged in a two-dimensional array extending in a first direction and a second direction; 
 capturing an image of the plurality of light-emitting elements bonded to the light transmission member, and forming an alignment mark on the light transmission member based on positions in the image of the plurality of light-emitting elements; and 
 after the forming of the alignment mark, forming a contact member in contact with a corresponding one of the plurality of light-emitting elements with the contact member being positioned with respect to the plurality of light-emitting elements by using the alignment mark. 
 
     
     
       2. The method according to  claim 1 , wherein
 the forming of the contact member includes at least one of:
 forming a bump as the contact member on a face of each of the plurality of light-emitting elements opposite to a face of each of the light-emitting elements to which the light transmission member is bonded; and 
 forming a light guide member as the contact member on the light transmission member so as to cover a lateral face of each of the plurality of light-emitting element. 
 
 
     
     
       3. The method according to  claim 2 , further comprising
 after the forming the contact member, cutting the light transmission member into a plurality of pieces by using the alignment mark such that at least one of the light-emitting elements is included in each of the plurality of pieces, to obtain a plurality of light-emitting devices. 
 
     
     
       4. The method according to  claim 1 , wherein
 the bonding of the plurality of light-emitting elements to the light transmission member further includes:
 disposing the plurality of light-emitting elements in the two-dimensional array on a support member; and 
 bringing the plurality of light-emitting elements disposed on the support member into contact with the light transmission member. 
 
 
     
     
       5. The method according to  claim 1 , wherein
 the light transmission member contains a wavelength conversion substance. 
 
     
     
       6. The method according to  claim 1 , wherein
 the forming of the alignment mark includes forming the alignment mark on outside of a bonding region of the light transmission member in which the plurality of light-emitting elements are bonded. 
 
     
     
       7. The method according to  claim 1 , wherein
 the forming of the alignment mark includes forming a groove as the alignment mark on a face of the light transmission member to which the light-emitting elements are bonded. 
 
     
     
       8. The method according to  claim 7 , wherein
 the forming of the alignment mark includes forming the groove using a dicing saw. 
 
     
     
       9. The method according to  claim 1 , wherein
 the forming of the alignment mark includes:
 determining, in the image, a first approximation straight line passing through two or more of the plurality of light-emitting elements aligned in the first direction, and a second approximation straight line passing through two or more of the plurality of light-emitting elements aligned in the second direction; 
 determining, in the image, a first axis parallel to the first approximation straight line, a second axis parallel to the second approximation straight line, and reference positions located on the first axis and the second axis; and 
 forming the alignment mark on the light transmission member based on the reference positions in the image. 
 
 
     
     
       10. The method according to  claim 1 , wherein
 the bonding of the plurality of light-emitting elements to the light transmission member includes bonding the plurality of the light emitting elements to the light transmission member having no alignment mark. 
 
     
     
       11. A method for producing a light-emitting device, comprising:
 bonding a plurality of light-emitting elements arranged in a two-dimensional array, all at once, to a plate-shaped light transmission member having an alignment mark identifying a position of a first coordinate point; 
 capturing an image of the plurality of light-emitting elements bonded to the light transmission member, determining a position of a second coordinate point of the light transmission member based on positions in the image of the plurality of light-emitting elements, and calculating information about positional offset between the second coordinate point determined and the first coordinate point identified by the alignment mark of the light transmission member; and 
 after the calculating of the information about the positional offset, forming a contact member in contact with a corresponding one of the plurality of light-emitting elements with the contact member being positioned with respect to the plurality of light-emitting elements by using the alignment mark of the light transmission member and the information about the positional offset.